Whole-system duct and dryer vent check with before-and-after photos - you see exactly what came out of your vents
That "$99 whole-house special" is a bait ad - the real number appears once they are in your hallway, or the "clean" is a shop-vac at the register. We photograph the inside of your ducts before and after instead.
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AfterFast, Reliable Air Duct Cleaning Across San Bruno
Air duct cleaning in San Bruno usually takes 3 to 5 hours and costs between $425 and $685 for a full single-system home, all in. If you live near San Bruno Creek or up in the Belle Air neighborhood and you’re seeing dust settle on furniture days after you wipe it down, or you catch a musty puff when the furnace kicks on, your ducts are due for a real look. We’re Cardinal Air Duct Cleaning, part of the Relay Home Co. family, and we serve San Bruno with crews who actually know the local housing stock. Call (737) 727-2314 and you’ll speak to a live person, not a voicemail tree.
Why Cardinal Air Duct Cleaning Is San Bruno’s Preferred Air Duct Cleaning Company
San Bruno homeowners tend to call us for one of two reasons: they’re about to move into a pre-1970 house and want to know what’s in the lungs of that home, or they’ve started noticing a film of dust on surfaces that cleaning doesn’t fix. Either way, the answer is the same. We show up in uniform, background-checked, with a written price handed to you before a single tool comes off the truck. That price doesn’t shift once we’re inside.
The houses along El Camino Real, Millbrae Avenue, and up toward Sylvan Avenue are dense, older, and full of single-wall duct runs that haven’t been opened in decades. Our technicians know what those runs look like inside because we open them every week. Omar Haddad, who leads our San Bruno team, has walked hundreds of local attics and crawlspaces and can tell you from a photo what condition your returns are in.
Air Duct Inspection in San Bruno
Air Duct Inspection in San Bruno is a camera-based look inside your supply and return ducts, and it runs $95 to $195 as a standalone service here, depending on access and home size. If you’re buying a house off a listing near San Bruno Avenue or you suspect moisture in the ducts of a 1950s rancher, an inspection is how you get certainty without opening walls. We lower a probe-mounted camera into the trunk lines and show you the live feed.
When a San Bruno Home Needs a Look Inside
You need a duct inspection before you sign on a pre-1970 house. The original ductwork in San Bruno’s post-war tracts often used cloth-backed tape at joints, which dries out and falls off over decades. A disconnected flex joint means your system is conditioning the crawlspace and pulling in whatever lives there.
You also need an inspection if you smell something when the HVAC cycles on. A camera can spot exactly where dead rodents, mold, or a collapsed return went unseen. A smell tells you something is wrong. A inspection tells you where and how much it costs to fix.
What the Camera Shows You
We don’t charge extra for the video. You watch the feed live, and we save a copy for your records. The top findings in San Bruno are lint mats around the blower motor, disconnected flex sections, and dust caking thickest in returns near the street-side of the house. SFO flight-path homes often show a pronounced gray film on return duct walls from outdoor particulate.
Residential Air Duct Cleaning in San Bruno
Residential Air Duct Cleaning in San Bruno costs $425 to $685 for a standard single-furnace home up to 2,000 square feet. That covers the full system: supply ducts, return ducts, air handler, blower motor, and registers. The price is set before we begin and will not change at the door. Larger homes or systems with two furnaces run $600 to $950.
How the System Gets Clean
Our process is source removal, not a vacuum pass. We seal off each register and attach a Nikro HEPA-rated vacuum to create negative pressure, which means anything we agitate is pulled toward the vacuum and out of your house through a HEPA filter, not released into the living room.
Then we work each duct from the register to the trunk line with Rotobrush rotary agitation tools. That cracks the caked-on dust that a vacuum-only cleaning leaves behind. The blower motor and evaporator coil get hand-cleaned with compressed air and soft brushes. The difference is real: dust that’s been baked onto duct walls for 40 years needs agitation, not just suction.
Why the Air Handler Matters in San Bruno
The air handler is where a single-wall duct system from the 1960s collects the most debris. Lint from dryers, hair, and fine Peninsula dust all pile up in the blower housing. A per-vent price quote rarely includes meaningful air handler work, which is why those cheap quotes sound so attractive and then balloon once the technician actually sees the unit.
Trusted Brands We Service in San Bruno
We service and clean around equipment from every major manufacturer, and we carry Guardsman and Aprilaire filtration products in our trucks for San Bruno jobs. If your system runs an Aprilaire media cabinet, we can replace the filter during the same visit. If you’ve been thinking about adding filtration, a Guardsman media filter is a straightforward install that pairs with a cleaning. Our techs are trained around Rotobrush and Nikro equipment daily, and Abatement Technologies containment units are on board for any crawlspace or attic work where dust containment matters. We don’t need to run back to a warehouse for parts; the truck is stocked for most San Bruno houses.
Common Air Duct Cleaning Problems We See in San Bruno Homes
- SFO flight-path dust loading. Homes directly under the arrival corridor into SFO accumulate a fine gray particulate in return ducts at roughly twice the rate of homes in Millbrae or Burlingame. Older window and door seals mean that outdoor air and jet particulate are actively drawn into the home through the return side.
- Failed cloth duct tape joints. Pre-1970 homes in San Bruno were often sealed with a cloth-backed tape that dries and releases over time. That creates gaps between duct sections where crawlspace air and debris get pulled in. A camera inspection finds those gaps in minutes; a cleaning without an inspection never does.
- Blower motor lint buildup. The blower motor housing in a San Bruno home is a lint trap, especially in houses that share a hallway with a laundry room. If the dryer vent runs near the return, fine lint is pulled in and matted against the fan and heat exchanger.
- Return trunk debris in crawls. The single-wall return trunks in mid-century San Bruno construction run through tight crawlspaces. Rodents, dust, and insulation all collect there over decades. Without a HEPA-rated vacuum and agitation, that mass just sits and re-circulates.
Pricing for Air Duct Cleaning in San Bruno, CA
You’ll pay one flat price per system, set in writing before we touch a duct. A standard single-furnace home in San Bruno runs $425 to $685. A two-furnace home runs $600 to $950. Air duct inspections run $95 to $195 standalone, and that fee is credited toward cleaning if you book us within 30 days. The factors that move the price are access difficulty, number of furnaces, and whether we’re cleaning an air handler with heavy debris. We never charge per vent. Per-vent pricing hides the real cost of the job and gives a technician an incentive to turn a $99 coupon into a $1,200 invoice. Our price covers the whole system, and the air handler and blower motor are always included, never an add-on. Call (737) 727-2314 for a written estimate.
We Also Serve Cities Near San Bruno
Our crews run daily through Millbrae, South San Francisco, Pacifica, and Brisbane. If you’re in any of those areas and need Air Duct Cleaning work done, the same written-price policy applies. Calls are answered by a live person, and the booking flow is phone-first from start to finish.
Serving San Bruno, CA - Our Local Coverage Area
We’re based in the San Bruno area and know this community well. Use the map below to see our service coverage - if you’re nearby, we can almost certainly help.
FAQs About Air Duct Cleaning in San Bruno
Every 3 to 5 years for most San Bruno houses, and more often for homes directly under the SFO arrival path or near a major road like El Camino Real. If you run AC most summer days, have pets, or just finished a remodel, lean toward the shorter end. Many homes only need one thorough cleaning, then many years before another. Call (737) 727-2314 and we’ll give you an honest answer about your situation, even if that answer is “not yet.”
Per system, never per vent. A single-furnace home in San Bruno runs $425 to $685 as a flat price set before work begins. Per-vent pricing is how the industry hides the real cost of the air handler and blower motor, which is the part of the system that actually needs the most work. We don’t do per-vent pricing, and we don’t do bait-and-switch coupons.
Yes. Before-and-after photos of your own ducts are part of every job, shown to you on a tablet before we leave. You’ll see what the inside of your returns looked like when we started and what they look like when we finished. It’s the same standard we’d want as homeowners ourselves, and it’s part of the Relay Standard on every booking.
Yes, and it mostly changes how we approach the return side and the air handler. Pre-1970 single-wall ducts in San Bruno collect more debris at joints and flex connections, and the blower motor usually needs more attention. We inspect with a camera first, then tailor the agitation and HEPA extraction to what the camera shows. Older ductwork also means we’re more careful around fragile joints; our techs are trained to work with 50-year-old metal without bending it.
No. Duct cleaning in San Bruno is a scheduled job, and any company promising same-day service is either cutting corners or inflating the price. We book San Bruno jobs within a few days, give you a live trackable arrival window, and send a written price before the technician arrives. You’ll know exactly when we’re coming and what it costs.
Call Cardinal Air Duct Cleaning at (737) 727-2314 for a free estimate on air duct cleaning anywhere in San Bruno, from Millbrae Avenue to Crestmoor. You’ll get a live person, a straight answer, and a price in writing before anyone touches a duct.
Written by Omar Haddad, Owner at Cardinal Air Duct Cleaning, serving San Bruno as part of the Relay Home Co. family since 2005.